CN117638928B - Intelligent power distribution network management system based on cloud computing - Google Patents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
- H02J2310/58—The condition being electrical
- H02J2310/60—Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
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Abstract
The invention discloses an intelligent power distribution network management system based on cloud computing, which relates to the field of power distribution network management and comprises a cloud computing center, wherein the cloud computing center is in communication connection with a data acquisition module, a model construction module, a power distribution load analysis module and a power distribution fault management module; acquiring data of the power distribution network to obtain corresponding resource data; performing model construction according to the acquired resource data to obtain a corresponding power distribution network model; carrying out distribution load prediction and fault prediction on distribution equipment in a distribution network according to the obtained resource data and a distribution network model, obtaining a corresponding prediction result, judging whether the distribution equipment in the distribution network has faults according to the obtained prediction result, and if so, taking corresponding protection measures; the invention is beneficial to improving the operation efficiency and stability of the power distribution network.
Description
Technical Field
The invention relates to the field of power distribution network management, in particular to an intelligent power distribution network management system based on cloud computing.
Background
With the development of technology, the management mode of the power system is also advancing continuously, and cloud computing is an emerging computing mode, and has strong data processing capability and high flexibility.
Compared with the prior art, the traditional power distribution network management system has the problems of weak data processing capability, poor system stability, high maintenance cost and the like, and has the advantages that an early warning mechanism is not arranged in advance, the post-emergency repair problem searching and processing speed is low, a large amount of manpower and material resources are required to be input for daily routing inspection maintenance business, and fault management is carried out on the basis of single historical data, so that the problems are needed to be solved.
Disclosure of Invention
The invention aims to provide an intelligent power distribution network management system based on cloud computing.
The aim of the invention can be achieved by the following technical scheme: the intelligent power distribution network management system based on cloud computing comprises a cloud computing center, wherein the cloud computing center is in communication connection with a data acquisition module, a model building module, a power distribution load analysis module and a power distribution fault management module;
the data acquisition module is used for acquiring data of the power distribution network, acquiring corresponding resource data and storing the resource data;
the model construction module is used for carrying out model construction according to the acquired resource data to obtain a corresponding power distribution network model;
the power distribution load analysis module is used for carrying out power distribution load prediction according to the power distribution load data in the acquired resource data, obtaining corresponding predicted load data, judging whether power distribution equipment is abnormal according to the obtained predicted load data, and marking the corresponding power distribution equipment as abnormal power distribution equipment if the power distribution equipment is abnormal;
the power distribution fault management module is used for carrying out fault prediction on corresponding abnormal power distribution equipment according to the obtained power distribution network model and the resource data, generating corresponding early warning information and taking protective measures.
Further, the data acquisition module performs data acquisition on the power distribution network, and the process of obtaining and storing corresponding resource data comprises the following steps:
the data acquisition module is internally provided with acquisition nodes and monitoring nodes, the acquired acquisition nodes are marked as i, wherein i=1, 2,3, … …, n, n > 0 and n is an integer, and the acquired monitoring nodes are marked as j, wherein j=1, 2,3, … …, m1, m1 > 0 and m1 is an integer;
the acquisition node is used for acquiring operation data and environment data in the power distribution network, wherein the operation data comprise voltage, current, frequency, electric field intensity, magnetic field intensity and the like, and the environment data comprise environment temperature, environment humidity and environment air pressure;
the monitoring nodes are used for collecting distribution load data of distribution equipment in the distribution network;
and packaging the acquired operation data, environment data and power distribution network data to obtain corresponding resource data, and uploading the corresponding resource data to a cloud computing center for storage.
Further, the model construction module is configured to perform model construction according to the collected operation data, and the process of obtaining the corresponding power distribution network model includes:
the model construction module performs model construction according to the acquired resource data, and the process of obtaining the corresponding power distribution network model comprises the following steps:
acquiring a construction drawing of a corresponding power distribution network during construction, acquiring a connection relation among power distribution equipment in the power distribution network and corresponding equipment parameters according to the construction drawing, and forming a topology relation of the power distribution network according to the connection relation of the power distribution equipment;
and constructing a model of the corresponding power distribution network based on a digital twin technology to obtain a corresponding digital twin model, inputting the acquired operation data into the digital twin model, and updating the corresponding digital twin model in real time to obtain the corresponding power distribution network model.
Further, the power distribution load analysis module predicts the power distribution load according to the power distribution load data in the collected resource data, obtains corresponding predicted load data, and judges whether the power distribution equipment is abnormal according to the predicted load data, wherein the process comprises the following steps:
reading the collected distribution load data, and establishing a two-dimensional rectangular coordinate system of time about the distribution load data to obtain a corresponding distribution load curve;
setting a monitoring period, acquiring distribution load data in the last monitoring period according to the obtained distribution load curve, calculating a change coefficient of distribution load in the corresponding monitoring period and the maximum distribution load in unit time according to the distribution load data, and further predicting the distribution load in the future period according to the obtained change coefficient of the distribution load and the maximum distribution load in unit time to obtain corresponding prediction load data.
Setting a load threshold, comparing the obtained predicted load data with the load threshold, judging whether the corresponding power distribution equipment is abnormal according to the comparison result, marking the corresponding power distribution equipment as abnormal power distribution equipment if the corresponding power distribution equipment is abnormal, generating a fault diagnosis notice at the same time, and sending the fault diagnosis notice to a cloud computing center.
Further, the process of the power distribution fault management module for performing fault management on power distribution equipment in the power distribution network according to the obtained power distribution network model and analysis result includes:
the cloud computing center reads the operation data and the environment data of the abnormal power distribution equipment acquired in the corresponding monitoring period, and guides the operation data and the environment data into a power distribution network model to simulate operation so as to obtain corresponding theoretical operation data and theoretical environment data; calculating a corresponding fault factor GZ according to the fault factor GZ;
setting a fault threshold gz; comparing the obtained fault factor GZ with the fault factor GZ;
if GZ is less than or equal to GZ, indicating that the corresponding abnormal power distribution equipment is in overload operation in a future period, feeding back load early warning to the cloud computing center and feeding back the load early warning to the cloud computing center;
if GZ is larger than GZ, judging that the corresponding abnormal power distribution equipment can fail in a future period, feeding back fault early warning to the cloud computing center and feeding back the fault early warning to the cloud computing center;
the cloud computing center adopts corresponding protection according to the received early warning;
further, the process that the cloud computing center takes corresponding protection according to the received early warning includes:
when load early warning is received, the cloud computing center acquires the predicted load data total amount and rated load capacity of the corresponding abnormal power distribution equipment, compares the acquired predicted load data total amount with the rated load capacity, generates a corresponding adjustment instruction according to a comparison result, and adjusts the load of the corresponding abnormal power distribution equipment according to the adjustment instruction;
when fault early warning is received, the cloud computing center acquires equipment parameters of corresponding abnormal power distribution equipment, historical fault times and equipment operation time of the corresponding equipment are acquired according to the equipment parameters, the equipment parameters are respectively marked as C and t1, and equipment aging coefficients of the corresponding abnormal power distribution equipment are calculated according to the equipment parameters and marked as LH;
wherein,；
wherein t2 refers to the average service life time of the same type of power distribution equipment, and is verified through experiments;
u represents a variation factor that varies with the operating time of the power distribution device;
setting an aging threshold range, and if the equipment aging coefficient is lower than the minimum value of the aging threshold range, performing three-level fault warning;
if the equipment aging coefficient is in the range of the aging threshold value, carrying out secondary fault warning, carrying out scheme retrieval in a maintenance database according to the theoretical operation data and the theoretical environment data obtained by prediction to obtain a plurality of equipment fault maintenance schemes, numbering the obtained equipment maintenance schemes, wherein b=1, 2, … … and q; modifying the resource data of the corresponding power distribution network model according to the obtained equipment maintenance scheme b, calculating corresponding fault factors, selecting the equipment maintenance scheme corresponding to the minimum fault factor as an optimal scheme, and sending the optimal scheme to management staff of the corresponding power distribution network;
if the equipment aging coefficient is higher than the maximum value of the aging threshold range, performing primary fault warning, remotely controlling a closed switch in the power distribution network by the cloud computing center to disconnect corresponding abnormal power distribution equipment, and dispatching a manager for maintenance or replacement;
the primary fault alert > the secondary fault alert > the tertiary fault alert.
Compared with the prior art, the invention has the beneficial effects that: the comprehensive acquisition, analysis and processing of the data in the power distribution network can be realized by the data acquisition module, the model construction module, the power distribution load analysis module, the power distribution fault management module and the like, and the management efficiency and the fault coping capacity of the power distribution network are improved; the cloud computing center is used for monitoring and adjusting the power distribution network in real time, so that the running efficiency and stability of the power distribution network are improved; the fault prediction is performed through the distribution load, the operation data and the environmental data in a multi-level mode, the monitoring efficiency of faults is effectively improved, potential fault risks are found and processed in time, outage or efficiency reduction of the distribution network caused by the faults is avoided, manual intervention and operation are reduced, and the accuracy and timeliness of distribution network management are improved.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
As shown in fig. 1, the intelligent power distribution network management system based on cloud computing comprises a cloud computing center, wherein the cloud computing center is in communication connection with a data acquisition module, a model construction module, a power distribution load analysis module and a power distribution fault management module;
the data acquisition module is used for acquiring data of the power distribution network, acquiring corresponding resource data and storing the resource data;
the model construction module is used for carrying out model construction according to the acquired resource data to obtain a corresponding power distribution network model;
the power distribution load analysis module is used for carrying out power distribution load prediction according to the power distribution load data in the acquired resource data, obtaining corresponding predicted load data, judging whether power distribution equipment is abnormal according to the obtained predicted load data, and marking the corresponding power distribution equipment as abnormal power distribution equipment if the power distribution equipment is abnormal;
the power distribution fault management module is used for carrying out fault prediction on corresponding abnormal power distribution equipment according to the obtained power distribution network model and the resource data, generating corresponding early warning information and taking protective measures;
it should be further noted that, in the implementation process, the data acquisition module performs data acquisition on the power distribution network, and the process of obtaining and storing corresponding resource data includes:
the data acquisition module is internally provided with acquisition nodes and monitoring nodes, the acquired acquisition nodes are marked as i, wherein i=1, 2,3, … …, n, n > 0 and n is an integer, and the acquired monitoring nodes are marked as j, wherein j=1, 2,3, … …, m1, m1 > 0 and m1 is an integer;
the acquisition node is used for acquiring operation data and environment data in the power distribution network, wherein the operation data comprise voltage, current, frequency, electric field intensity, magnetic field intensity and the like, and the environment data comprise environment temperature, environment humidity and environment air pressure;
the monitoring nodes are used for collecting distribution load data of distribution equipment in the distribution network;
packaging the collected operation data, environment data and power distribution network data to obtain corresponding resource data, and uploading the corresponding resource data to a cloud computing center for storage;
in the specific implementation process, the acquisition nodes are respectively arranged in power distribution equipment, a power transmission line and a closed switch in the power distribution network according to requirements; the monitoring nodes are only arranged in power distribution equipment in the power distribution network.
It should be further noted that, in the implementation process, the model construction module performs model construction according to the collected resource data, and the process of obtaining the corresponding power distribution network model includes:
acquiring a construction drawing of a corresponding power distribution network during construction, acquiring a connection relation among power distribution equipment in the power distribution network and corresponding equipment parameters according to the construction drawing, and forming a topology relation of the power distribution network according to the connection relation of the power distribution equipment;
the device parameters include, but are not limited to, device rated load capacity, device model number, rated voltage;
establishing a corresponding power distribution network model based on a digital twin model technology, obtaining a corresponding digital twin model, reading collected operation data, preprocessing the collected operation data, importing the preprocessed operation data into the obtained digital twin model, and further updating the corresponding digital twin model in real time by combining the obtained equipment parameters and the network topological relation to obtain a corresponding power distribution network model;
it should be further noted that, in the specific implementation process, the preprocessing includes outlier processing, missing value processing, and normalization processing;
the outlier processing is used for cleaning abnormal data, the outlier processing adopts an absolute middle-bit difference outlier processing method, the missing value processing is used for filling missing data, the missing value processing adopts a statistic filling method, the normalization processing is used for unifying the formats of the data, and the normalization processing adopts a Z-Score normalization method;
it should be further noted that, in the implementation process, the process of performing distribution load prediction by the distribution load analysis module according to the collected distribution load data in the resource data to obtain corresponding prediction load data, and judging whether the distribution equipment is abnormal according to the prediction load data includes:
reading the power distribution load data collected at the monitoring node j, and establishing a two-dimensional rectangular coordinate system of time about the power distribution load data to obtain a corresponding power distribution load curve;
setting a monitoring period, wherein the monitoring period is marked as h, j=1, 2, … …, m2, m2 is more than 0, m2 is an integer, and the monitoring duration of the corresponding monitoring period is marked as T;
according to the distribution load curve, the distribution load data in the last monitoring period is acquired and numbered and is marked as k, wherein k=1, 2, … …, m3, m3 > 0 and m3 is an integer, and the corresponding distribution load data is marked as P k The method comprises the steps of carrying out a first treatment on the surface of the Dynamically evaluating corresponding distribution load to obtain change coefficient of the corresponding distribution load, and recording the obtained change coefficient of the distribution load as B 1 ；
Wherein,；
reading the obtained distribution load curve, and obtaining the total distribution load in the corresponding monitoring period according to the distribution load curve, and recording as PD Total (S) Further calculating the unit time length distribution load in the corresponding monitoring period；
Wherein,；
reading the obtained distribution load curve, recording the peak value highest point of the corresponding distribution load curve as the maximum distribution load of unit time length, and using max (P k ) A representation;
obtaining the maximum peak value average ratio of distribution loads of the corresponding distribution network in unit time, and marking the maximum peak value average ratio as PV;
wherein,；
calculating according to the obtained maximum peak-to-average ratio of the distribution load and the average distribution load to obtain the maximum distribution load of the corresponding monitoring node m in unit time, and marking the maximum distribution load as PY;
wherein,；
wherein alpha is a correction coefficient, and the specific numerical value is determined according to actual requirements;
according to the obtained maximum distribution load and the change coefficient of the distribution load in unit time, predicting distribution load data at a monitoring node j by combining a distribution network model to obtain corresponding predicted load data;
setting a load threshold range, obtaining the predicted load total amount at a corresponding monitoring node j according to the obtained predicted load data, and comparing the predicted load total amount obtained at the monitoring node j with the load threshold range;
if the predicted total load is within the load threshold range, not performing any other operation;
if the predicted load total amount is out of the load threshold range, marking the power distribution equipment corresponding to the corresponding monitoring node j as abnormal power distribution equipment, generating a fault diagnosis notice and feeding the fault diagnosis notice back to the cloud computing center;
it should be further noted that, in the implementation process, the process of the power distribution fault management module for performing fault management on power distribution equipment in the power distribution network according to the obtained power distribution network model and the analysis result includes:
the power distribution fault management module comprises a fault diagnosis unit and a fault processing unit;
the fault diagnosis unit is used for judging whether the corresponding abnormal power distribution equipment has faults according to the obtained power distribution network model, and obtaining a corresponding judgment result;
the fault processing unit is used for protecting the power distribution network according to the obtained judging result;
it should be further noted that, in the implementation process, the process that the fault diagnosis unit judges whether the corresponding abnormal power distribution equipment has a fault according to the obtained power distribution network model, and obtains the corresponding judgment result includes:
when the cloud computing center receives the fault diagnosis notification, the cloud computing center correspondingly monitors operation data and environment data acquired in the period, and guides the operation data and the environment data into a power distribution network model to simulate real operation, so as to obtain corresponding theoretical operation data and theoretical environment data, and the theoretical operation data and the theoretical environment data are transmitted to a power distribution fault management module;
acquiring an environmental parameter threshold meeting the normal operation of the corresponding power distribution equipment in the period of the corresponding monitoring period by utilizing a big data technology; comparing the obtained theoretical environmental data information with an environmental parameter threshold value to obtain corresponding deviation value information, wherein the deviation value information comprises an environmental temperature deviation value, an environmental humidity deviation value and an environmental air pressure deviation value, and respectively marking the deviation value information as HW, HS and HQ, so as to calculate a corresponding environmental deviation coefficient HP according to the deviation value information;
wherein hp=λ1×hw+λ2×hs+λ3×hq;
wherein, λ1, λ2, λ3 respectively represent the weight proportion of the ambient temperature, the ambient humidity and the ambient air pressure, and λ1+λ2+λ3=1, the specific numerical value depends on the actual requirement;
acquiring rated voltage, rated current and rated amplitude of corresponding abnormal power distribution equipment, reading the acquired theoretical operation data, respectively acquiring average values of voltage data, current data and amplitude data in the theoretical operation data, respectively carrying out difference calculation on the acquired average values and the rated voltage, the rated current and the rated amplitude to acquire corresponding voltage difference DY, current difference DL and amplitude difference ZL; and then calculating the equipment stability coefficient SW of the corresponding abnormal power distribution equipment according to the equipment stability coefficient SW;
wherein,；
wherein, sigma 1, sigma 2 and sigma 3 are weight coefficients, and sigma 1+sigma 2+sigma 3=1, and specific numerical values depend on actual demands;
substituting the obtained equipment stability coefficient SW and the environment deviation coefficient HP into a mathematical formula to obtain a corresponding equipment fault factor GZ, wherein the corresponding mathematical formula is as follows:
；
wherein a1 and a2 are weight coefficients, and a1+a2=1;
setting a fault threshold gz; comparing the obtained fault factor GZ with the fault factor GZ;
if GZ is less than or equal to GZ, indicating that the corresponding abnormal power distribution equipment is in overload operation in a future period, and feeding back load early warning to the cloud computing center;
if GZ is larger than GZ, judging that the corresponding abnormal power distribution equipment can fail in a future period, and feeding back a failure early warning to the cloud computing center;
it should be further noted that, in a specific implementation process, the process of protecting the power distribution network by the fault processing unit according to the obtained judgment result includes:
when the cloud computing center receives the load early warning, the predicted load total amount and rated load capacity of corresponding abnormal power distribution equipment are obtained and respectively recorded as SY and SE;
comparing the obtained predicted load total SY with rated load capacity, and generating corresponding adjustment instructions according to the comparison result, wherein the adjustment instructions comprise load up-adjustment instructions and load down-adjustment instructions, and carrying out corresponding load capacity adjustment through a fault processing unit according to the obtained adjustment instructions;
it should be further noted that, in the implementation process, the process of performing corresponding load capacity adjustment by the fault processing unit according to the obtained adjustment instruction includes:
if SY is smaller than SE, indicating that the corresponding abnormal power distribution equipment is in overload operation, generating a load up-regulation instruction and sending the load up-regulation instruction to a fault processing unit;
after receiving the load up-regulation instruction, the fault processing unit adjusts the load capacity of the corresponding abnormal power distribution equipment according to a first load proportion S1, wherein；
If SY is more than or equal to SE, indicating that the corresponding abnormal power distribution equipment is in overload operation, generating a load down-regulating instruction and sending the load down-regulating instruction to a fault processing unit;
when the fault processing unit receives a load down-regulation instruction, load capacity regulation is carried out on the corresponding distribution load according to a second load proportion S2, wherein；
When fault early warning is received, the cloud computing center acquires equipment parameters of corresponding abnormal power distribution equipment, and further records as C and t1 according to the historical fault times and equipment operation time of the corresponding equipment, and further calculates equipment aging coefficients of the corresponding abnormal power distribution equipment according to the equipment parameters and records as LH;
wherein,；
wherein t2 refers to the average service life time of the same type of power distribution equipment, and is verified through experiments;
u represents a variation factor that varies with the operating time of the power distribution device;
ρ1, ρ2 are weight coefficients, and ρ1+ρ2=1;
setting an aging threshold range, and if the equipment aging coefficient is lower than the minimum value of the aging threshold range, performing three-level fault warning;
if the equipment aging coefficient is in the range of the aging threshold value, carrying out secondary fault warning, carrying out scheme retrieval in a maintenance database according to the theoretical operation data and the theoretical environment data obtained by prediction to obtain a plurality of equipment fault maintenance schemes, numbering the obtained equipment maintenance schemes, wherein b=1, 2, … … and q; modifying the resource data of the corresponding power distribution network model according to the obtained equipment maintenance scheme b, calculating corresponding fault factors, selecting the equipment maintenance scheme corresponding to the minimum fault factor as an optimal scheme, and sending the optimal scheme to management staff of the corresponding power distribution network;
if the equipment aging coefficient is higher than the maximum value of the aging threshold range, performing primary fault warning, remotely controlling a closed switch in the power distribution network by the cloud computing center to disconnect corresponding abnormal power distribution equipment, and dispatching a manager for maintenance or replacement;
it should be further noted that, in the implementation process, the primary fault warning > the secondary fault warning > the tertiary fault warning;
it should be further noted that, in the implementation process, the maintenance database is used for storing the collected fault data corresponding to the fault of the historical power distribution equipment and the corresponding equipment maintenance scheme.
The above embodiments are only for illustrating the technical method of the present invention and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present invention may be modified or substituted without departing from the spirit and scope of the technical method of the present invention.
Claims (1)
1. The intelligent power distribution network management system based on cloud computing comprises a cloud computing center, and is characterized in that the cloud computing center is in communication connection with a data acquisition module, a model building module, a power distribution load analysis module and a power distribution fault management module;
the data acquisition module is used for acquiring data of the power distribution network, acquiring corresponding resource data and storing the resource data;
the model construction module is used for carrying out model construction according to the acquired resource data to obtain a corresponding power distribution network model;
the power distribution load analysis module is used for carrying out power distribution load prediction according to the power distribution load data in the acquired resource data, obtaining corresponding predicted load data, judging whether power distribution equipment is abnormal according to the obtained predicted load data, and marking the corresponding power distribution equipment as abnormal power distribution equipment if the power distribution equipment is abnormal;
the power distribution fault management module is used for carrying out fault prediction on corresponding abnormal power distribution equipment according to the obtained power distribution network model and the resource data, generating corresponding early warning information and taking protective measures;
the data acquisition module performs data acquisition on the power distribution network, and the process of obtaining and storing corresponding resource data comprises the following steps:
the data acquisition module comprises an acquisition node and a monitoring node, wherein the acquisition node is used for acquiring operation data and environment data in the power distribution network; the monitoring nodes are used for collecting distribution load data of distribution equipment in the distribution network;
packaging the collected operation data, environment data and distribution load data to obtain corresponding resource data, uploading the resource data to a cloud computing center and storing the resource data;
the model construction module performs model construction according to the acquired resource data, and the process of obtaining the corresponding power distribution network model comprises the following steps:
model construction is carried out on the corresponding power distribution network based on a digital twin technology, a corresponding digital twin model is obtained, collected operation data are input into the digital twin model, and the corresponding digital twin model is updated in real time, so that a corresponding power distribution network model is obtained;
the distribution load analysis module predicts distribution load according to distribution load data in the acquired resource data, and the process of obtaining corresponding predicted load data comprises the following steps:
the method comprises the steps of reading distribution load data collected at monitoring nodes, and establishing a two-dimensional rectangular coordinate system of time about the distribution load data to obtain a corresponding distribution load curve;
setting monitoring periods, acquiring distribution load data in adjacent monitoring periods according to the obtained distribution load curves, and calculating change coefficients of distribution loads in corresponding monitoring periods according to the acquired distribution load data;
reading the obtained distribution load curve, obtaining the total distribution load in the corresponding monitoring period according to the distribution load curve, and further calculating the distribution load in the unit time length in the corresponding monitoring period;
reading the obtained distribution load curve, marking the peak value highest point of the corresponding distribution load curve as the maximum distribution load of unit time length, and obtaining the maximum peak value average ratio of the distribution load of the corresponding distribution network in unit time according to the peak value highest point;
calculating according to the obtained maximum peak-to-average ratio of the distribution load and the average distribution load to obtain the maximum distribution load of the corresponding monitoring node in unit time;
predicting the distribution load according to the obtained change coefficient of the distribution load and the maximum distribution load in unit time to obtain corresponding predicted load data;
the process of judging whether the power distribution equipment is abnormal according to the obtained predicted load data comprises the following steps:
setting a load threshold, comparing the obtained predicted load data with the load threshold, judging whether the corresponding power distribution equipment is abnormal according to the comparison result, if so, marking the corresponding power distribution equipment as abnormal power distribution equipment, generating a fault diagnosis notice at the same time, and sending the fault diagnosis notice to a cloud computing center;
the power distribution fault management module is used for carrying out fault prediction on corresponding abnormal power distribution equipment according to the obtained power distribution network model and the obtained resource data, and the process for generating corresponding early warning information comprises the following steps:
the operation data and the environment data of the abnormal power distribution equipment acquired in the corresponding monitoring period are read, and are imported into a power distribution network model to simulate operation, so that corresponding theoretical operation data and theoretical environment data are obtained, and corresponding fault factors are calculated according to the theoretical operation data and the theoretical environment data;
setting a fault threshold, comparing the obtained fault factor with the fault threshold, and generating corresponding early warning information according to the comparison result, wherein the early warning information comprises fault early warning and load early warning, the obtained early warning information is fed back to a cloud computing center, and the cloud computing center takes corresponding protection measures according to the received early warning information;
the cloud computing center takes corresponding protection measures according to load early warning, and the process comprises the following steps:
when load early warning is received, the cloud computing center acquires the predicted load data total amount and rated load capacity of the corresponding abnormal power distribution equipment, compares the acquired predicted load data total amount with the rated load capacity, generates a corresponding adjustment instruction according to a comparison result, and adjusts the load of the corresponding abnormal power distribution equipment according to the adjustment instruction;
the cloud computing center takes corresponding alarm measures according to the obtained fault early warning, and the process comprises the following steps:
when fault early warning is received, acquiring equipment parameters and running time of the abnormal power distribution equipment, calculating equipment aging coefficients of the corresponding abnormal power distribution equipment according to the equipment parameters and the running time, setting an aging threshold range, comparing the acquired equipment aging coefficients with the aging threshold range, and adopting corresponding fault warning according to the comparison result.
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